|Morton's Salt advertisement, ca. 1930s|
The records also contain a traveling salt kit for Sterling Salt salesmen; select annual reports and employee newsletters for International Salt; trademarks for a variety of salt companies (1890s-1920s); payroll ledgers; black-and-white photographs depicting mines and employees; and slides. Of note are photographs by American photographer William Rittase (1887-1968), active in the 1920s-1930s and known for his industrial photography. Rittase’s images provide insight into salt manufacturing and packaging operations.